<template>
  <div class='list' ref='wrapper'>
   <div>
     <div class="area">
       <div class='title border-topbottom'>当前城市</div>
       <div class='button-list'>
         <div class='button-wrapper'>
           <div class="button">{{this.currentCity}}</div>
         </div>
       </div>
     </div>
     <div class="area">
       <div class='title border-topbottom'>热门城市</div>
       <div class='button-list'>
         <div class='button-wrapper' v-for='item in hot' 
         :key='item.id' @click='handleCityClick(item.name)'>
           <div class="button">{{item.name}}</div>
         </div>
       </div>
     </div>
     <div class="area" v-for='(item,key) in cities' :key='key' :ref='key'>
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for='inItem in item'
           :key='inItem.id' @click='handleCityClick(inItem.name)'>
            {{inItem.name}}
          </div>
        </div>
      </div>
    
     
   </div>
  </div>
</template>

<script>
import Bscroll from "better-scroll";
import { mapState, mapMutations, mapActions } from "vuex";
export default {
  name: "CityList",
  props: ["cities", "hot", "letter"],
  data() {
    return {};
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.wrapper);
  },
  computed: {
    ...mapState({
      currentCity: "city"
    })
  },
  watch: {
    letter(val) {
      if (val) {
        const el = this.$refs[val][0];
        this.scroll.scrollToElement(el);
      }
    }
  },
  methods: {
    handleCityClick(city) {
      // this.$store.dispatch("changeCity", city);
      // this.$store.commit("changeCity", city);
      this.changeCityAction(city);
      // this.changeCity(city);
      this.$router.push("/");
    },
    ...mapMutations(["changeCity"]), //对象或数组
    ...mapActions({
      changeCityAction: "changeCity"
    })
  },
  components: {}
};
</script>

<style lang='stylus' scoped>
.border-topbottom
  &:before
    border-color #ccc
  &:after
    border-color #ccc
.border-bottom
  &:before
    border-color #ccc
.list
  position absolute
  overflow hidden
  top 1.58rem
  left 0
  right 0
  bottom 0
  .title
    line-height 0.54rem
    font-size 0.26rem
    background #eeeeee
    padding-left 0.2rem
    color #666
  .button-list
    padding 0.1rem 0.6rem 0.1rem 0.1rem
    overflow hidden
    .button-wrapper
      float left
      width 33.33%
      .button
        padding 0.1rem 0
        text-align center
        margin 0.1rem
        border 0.02rem solid #ccc
        border-radius 0.06rem
  .item-list
    .item
      line-height 0.76rem
      padding-left 0.2rem
</style>
